Although Apple have claimed full compatibility to Qi charging specification, since the launch of iPhone 12, there has been a growing number of issues raised with its wireless charging function on existing in market products, like Luxetech & Alldock.
It is rumoured that the new magsafe function including Magsafe Case maybe disrupting the conduction Qi charging.
SOLUTION : The only validated remedy at this point is to "reboot" your device.
We are working hard to have a solution to integrate the MagSafe function into our chargers in mid 2021.
The below link also will provide some updated news
Please ensure your phone has the latest iOS update.